Sir Keir Starmer’s pledge to forge Britain into an artificial intelligence “superpower” has suffered its most embarrassing setback to date, after OpenAI quietly shelved its flagship Stargate UK data centre project, pointing the finger squarely at ruinous industrial energy prices and a muddled copyright regime.

The ChatGPT developer confirmed on Thursday that it was pausing the scheme, which had been unveiled with considerable fanfare last September during President Trump’s state visit. Stargate UK was meant to be the crown jewel in a £31 billion package of American technology commitments that also included £22 billion from Microsoft and £5 billion from Google. OpenAI, tellingly, never put a figure on its own pledge.

Built in partnership with chip giant Nvidia and London-based Nscale, the project was sold to ministers as a “major step” towards building sovereign British compute capacity, initially deploying some 8,000 graphics processing units in the first quarter of this year and scaling to roughly 31,000 chips thereafter. Sam Altman (pictured), OpenAI’s chief executive, had talked up its potential to turbocharge scientific research, lift productivity and juice economic growth, the very metrics the Labour government has staked its credibility on.

For the hundreds of thousands of small and mid-sized British firms eyeing AI as a route to efficiency and competitiveness, the climbdown is more than symbolic. Without domestic compute power at scale, SMEs risk being pushed further down the queue behind American and European rivals who can plug into cheaper, closer infrastructure.

Sam Richards, chief executive of the pro-infrastructure campaign group Britain Remade, did not mince his words. He described the pause as “a stark warning” that Britain was becoming prohibitively expensive to build in, arguing that no country saddled with some of the developed world’s steepest industrial electricity tariffs could credibly call itself an AI superpower. Investors, he warned, would simply take their chequebooks elsewhere.

An OpenAI spokesman insisted the company remained committed in principle, saying it would press ahead with Stargate UK once “the right conditions” on regulation and energy costs allowed for genuine long-term infrastructure investment. London, the spokesman noted, remained the firm’s largest international research hub, and OpenAI was continuing to expand its local headcount and roll out frontier AI tools within public services.

Behind the diplomatic language, however, lies a more pointed grievance. OpenAI made clear that the government’s U-turn on copyright reform was a significant factor in its decision. The company had been lobbying aggressively for a regime that would have permitted AI developers to hoover up copyrighted material to train their models unless rights holders explicitly opted out. After a fierce backlash from authors, musicians, publishers and much of the wider creative industries, ministers scrapped the proposal and now insist they have “no preferred option” on the way forward.

While the original Stargate announcement pitched the British chip cluster at “specialist use cases” in the public sector, regulated industries such as financial services, academic research and national security, OpenAI pointedly avoided any reference to training models on UK soil. The firm has now conceded it wanted the “freedom and the options” to deploy that local capacity as it saw fit — a euphemism, critics will say, for the very training activity at the heart of the copyright row.

The economics of the decision are, however, harder to spin away. Hyperscale data centres are voracious consumers of electricity, and the United Kingdom continues to lumber large industrial users with some of the highest power prices in the OECD. For a sector in which marginal costs dictate where the next gigawatt of capacity lands, Britain’s energy bill is an increasingly difficult sell in Silicon Valley boardrooms.

A Whitehall spokesman said the government was continuing to work with OpenAI and other leading AI firms “to strengthen UK compute capacity”, though officials privately acknowledge the optics are bruising.

The retreat also dovetails with a broader tightening of focus inside OpenAI itself. Valued at an eye-watering $852 billion at its most recent fundraising, the company is widely expected to press the button on a blockbuster stock-market flotation later this year, and has been busily jettisoning what insiders have dubbed “side quests”. In recent weeks it has pulled the plug on its Sora video-generation app, binned plans for an adult-oriented chatbot and quietly wound down an experiment in e-commerce.

Nscale declined to comment. Nvidia had not responded to a request for comment at the time of writing.

For British business, the message is uncomfortably clear: without urgent action on energy costs and regulatory clarity, the much-vaunted AI gold rush may end up passing these shores by.

Jamie Young

Jamie is Senior Reporter at Business Matters, bringing over a decade of experience in UK SME business reporting.
Jamie holds a degree in Business Administration and regularly participates in industry conferences and workshops.

When not reporting on the latest business developments, Jamie is passionate about mentoring up-and-coming journalists and entrepreneurs to inspire the next generation of business leaders.